WASHINGTON (CNN) - Herman Cain is scheduled to take part in a Republican presidential debate in Michigan on Wednesday, a day after he vehemently denied all sexual harassment allegations against him.

Cain said Tuesday he has no memory of the first accuser to publicly describe misconduct by the GOP presidential hopeful, and he rejected the growing number of allegations as a politically motivated attempt to discredit his front-running campaign.

Middletown, Delaware (CNN) - It doesn't look like the typical headquarters of a GOP senatorial nominee. About eight employees are right now jammed in the living room area of a non-descript townhouse near Wilmington, Delaware. This is where Christine O'Donnell's campaign runs one of the most talked-about races in the country. She's already beaten one political machine and is taking on another, but this shoestring staff is still struggling to hire more people and streamline communications. We're told that some members of the campaign staff of 10 work downstairs in this townhouse by day and live upstairs at night. When we asked if O'Donnell lives there, we were told she "sometimes stays here."

This staff is still dealing with the phenomenon of overnight notoriety, and that includes fending off withering attacks by O'Donnell's opponents. They're coming at her hard, playing up comments she made more than a decade ago when she said she "dabbled in witchcraft," and focusing on accusations that she misused campaign money for her personal expenses. O'Donnell was not at the townhouse to answer our questions on those topics, so her staff fielded them.